How to avoid ecllipse juno failed to start?

Question

while starting Eclipse Juno frequently, I am getting server failed to start ..I deleted .snap and temp folders also but I am getting same problem frequently.

If I change work space some times it runs some times it is not starting.why it is coming how to avoid that?

Please,clear my problem I am getting it very frequently.

console error:

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/sample]]
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
    at java.util.concurrent.FutureTask.get(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/sample]]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
    ... 7 more
Caused by: java.lang.IllegalArgumentException: The servlets named [DisplayServlet] and [com.sensiple.DisplayServlet] are both mapped to the url-pattern [/DisplayServlet] which is not permitted
    at org.apache.catalina.deploy.WebXml.addServletMapping(WebXml.java:335)
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]]
WARNING: Failed to retrieve JNDI naming context for container [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/sample]] so no cleanup was performed for that container
javax.naming.NamingException: No naming context bound to this class loader

Answer 1

You already did the first thing to try, which is to switch to a different workspace.

This is basically impossible to debug. If I were you, I'd remove your installed version of Eclipse and reinstall the latest version, which is Kepler (4.3.1) now.